diff --git a/vlib/v/gen/c/array.v b/vlib/v/gen/c/array.v
index 94f0ebdefd..c825a35548 100644
--- a/vlib/v/gen/c/array.v
+++ b/vlib/v/gen/c/array.v
@@ -471,20 +471,20 @@ fn (mut g Gen) gen_array_contains_method(left_type ast.Type) string {
 		fn_builder.writeln('static bool ${fn_name}($left_type_str a, $elem_type_str v) {')
 		fn_builder.writeln('\tfor (int i = 0; i < a.len; ++i) {')
 		if elem_sym.kind == .string {
-			fn_builder.writeln('\t\tif (string_eq((*(string*)array_get(a, i)), v)) {')
+			fn_builder.writeln('\t\tif (fast_string_eq(((string*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .array && left_info.elem_type.nr_muls() == 0 {
 			ptr_typ := g.gen_array_equality_fn(left_info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_arr_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_arr_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .function {
-			fn_builder.writeln('\t\tif ((*(voidptr*)array_get(a, i)) == v) {')
+			fn_builder.writeln('\t\tif (((voidptr*)a.data)[i] == v) {')
 		} else if elem_sym.kind == .map && left_info.elem_type.nr_muls() == 0 {
 			ptr_typ := g.gen_map_equality_fn(left_info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_map_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_map_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .struct_ && left_info.elem_type.nr_muls() == 0 {
 			ptr_typ := g.gen_struct_equality_fn(left_info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_struct_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_struct_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else {
-			fn_builder.writeln('\t\tif ((*($elem_type_str*)array_get(a, i)) == v) {')
+			fn_builder.writeln('\t\tif ((($elem_type_str*)a.data)[i] == v) {')
 		}
 		fn_builder.writeln('\t\t\treturn true;')
 		fn_builder.writeln('\t\t}')
@@ -535,20 +535,20 @@ fn (mut g Gen) gen_array_index_method(left_type ast.Type) string {
 		fn_builder.writeln('static int ${fn_name}($left_type_str a, $elem_type_str v) {')
 		fn_builder.writeln('\tfor (int i = 0; i < a.len; ++i) {')
 		if elem_sym.kind == .string {
-			fn_builder.writeln('\t\tif (string_eq((*(string*)array_get(a, i)), v)) {')
+			fn_builder.writeln('\t\tif (fast_string_eq(((string*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .array && !info.elem_type.is_ptr() {
 			ptr_typ := g.gen_array_equality_fn(info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_arr_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_arr_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .function && !info.elem_type.is_ptr() {
-			fn_builder.writeln('\t\tif ((*(voidptr*)array_get(a, i)) == v) {')
+			fn_builder.writeln('\t\tif (((voidptr*)a.data)[i] == v) {')
 		} else if elem_sym.kind == .map && !info.elem_type.is_ptr() {
 			ptr_typ := g.gen_map_equality_fn(info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_map_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_map_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else if elem_sym.kind == .struct_ && !info.elem_type.is_ptr() {
 			ptr_typ := g.gen_struct_equality_fn(info.elem_type)
-			fn_builder.writeln('\t\tif (${ptr_typ}_struct_eq(*($elem_type_str*)array_get(a, i), v)) {')
+			fn_builder.writeln('\t\tif (${ptr_typ}_struct_eq((($elem_type_str*)a.data)[i], v)) {')
 		} else {
-			fn_builder.writeln('\t\tif ((*($elem_type_str*)array_get(a, i)) == v) {')
+			fn_builder.writeln('\t\tif ((($elem_type_str*)a.data)[i] == v) {')
 		}
 		fn_builder.writeln('\t\t\treturn i;')
 		fn_builder.writeln('\t\t}')
diff --git a/vlib/v/markused/markused.v b/vlib/v/markused/markused.v
index 749b009483..cbe92e4abe 100644
--- a/vlib/v/markused/markused.v
+++ b/vlib/v/markused/markused.v
@@ -65,6 +65,7 @@ pub fn mark_used(mut table ast.Table, pref &pref.Preferences, ast_files []ast.Fi
 		'18.gt',
 		'18.le',
 		'18.ge',
+		'fast_string_eq',
 		// ustring. ==, !=, etc...
 		'19.eq',
 		'19.ne',